I would like have code in the sheet module that calculates the elapsed time
it takes a user to enter data into the spreadsheet. For example... A user
first data entry is in column "A" and last data entry is in column "E". I
would like to start a clock when they enter the data in column "A" and stop
it when the data in column "E" is entered and output to elapsed time in
column "F". Data will continue to be entered in descending order by row
every hour or so... that's why I believe the code needs to be dynamic in the
sheet module.

Input 1 Input 2 Input 3 Input 4 Input 5 Total Input Time
1 2 3 4 5 0:01:42
1 2 3 4 5 0:02:12
1 2 3 4 5 0:02:42
1 2 3 4 5 0:03:12

Any suggestions would be appreciated... thanks!